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yaya974
@yaya974
January 2021
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bonjour , vous pouvez m'aider svp merci
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syogier
Bonjour,
-10x²-20x+80 = 0 => 10(-x²-2x +8) = 0,
calcul du discriminant
Δ =b²-4ac = (-2)² +32 = 36 =6²
2 solutions : x =-b-√Δ /2a = -(-2) -6 /-2 = -4 /-2 = 2 et x' = 2 +6 /-2 = -4
f(100) = 10(-100² -200 +8) = -101 920
1 votes
Thanks 1
yaya974
Merci sa signifie quoi le triage ?
yaya974
*triangle stp ?
syogier
C'est le symbole du discriminant: tu l'as vu en cours ?
syogier
c'est delta
yaya974
ah oui Merci :)
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Pouvez vous m'aidez pour cette exercice en Math svp Merci merci :p d'avance
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Lista de comentários
-10x²-20x+80 = 0 => 10(-x²-2x +8) = 0,
calcul du discriminant Δ =b²-4ac = (-2)² +32 = 36 =6²
2 solutions : x =-b-√Δ /2a = -(-2) -6 /-2 = -4 /-2 = 2 et x' = 2 +6 /-2 = -4
f(100) = 10(-100² -200 +8) = -101 920